The Sig Sauer MPX Copperhead is a highly versatile and reliable submachine gun, designed for a wide range of applications, from law enforcement and military operations to competitive shooting sports. As a compact and lightweight platform, the MPX Copperhead offers users a unique combination of portability, accuracy, and firepower. With its origins rooted in the MPX family of firearms, the Copperhead has evolved to become a distinctive and highly sought-after variant, known for its exceptional performance and durability.
Design and Features

The Sig MPX Copperhead features a monolithic upper receiver, constructed from a high-strength aluminum alloy, providing a rigid and durable platform for the firearm’s operating system. The Copperhead’s gas-operated, short-stroke piston design ensures reliable cycling and reduces recoil, allowing for more accurate and controlled shooting. The firearm’s 4.5-inch barrel is cold hammer-forged, resulting in a highly accurate and durable shooting platform. The MPX Copperhead also features a collapsible stock, allowing users to easily adjust the firearm’s length to suit their individual needs and preferences.
Key Specifications
The Sig MPX Copperhead has a number of key specifications that make it an attractive option for a wide range of users. The firearm’s overall length is 14.5 inches, with a barrel length of 4.5 inches and a height of 7.5 inches. The MPX Copperhead weighs in at 4.5 pounds, making it highly portable and easy to maneuver. The firearm’s magazine capacity is 20 rounds, and it is chambered in 9x19mm Parabellum. The MPX Copperhead also features a Picatinny rail, allowing users to easily mount optics and other accessories.
Specification | Value |
---|---|
Caliber | 9x19mm Parabellum |
Barrel Length | 4.5 inches |
Overall Length | 14.5 inches |
Weight | 4.5 pounds |
Magazine Capacity | 20 rounds |

Key Points
- The Sig MPX Copperhead is a highly versatile and reliable submachine gun, designed for a wide range of applications.
- The firearm features a monolithic upper receiver, constructed from a high-strength aluminum alloy, providing a rigid and durable platform for the firearm's operating system.
- The MPX Copperhead has a gas-operated, short-stroke piston design, ensuring reliable cycling and reducing recoil.
- The firearm's 4.5-inch barrel is cold hammer-forged, resulting in a highly accurate and durable shooting platform.
- The MPX Copperhead features a collapsible stock, allowing users to easily adjust the firearm's length to suit their individual needs and preferences.
Performance and Reliability

The Sig MPX Copperhead has a reputation for exceptional performance and reliability, making it a popular choice among law enforcement, military, and competitive shooting sports communities. The firearm’s gas-operated, short-stroke piston design ensures reliable cycling, even in the most adverse environments, and reduces recoil, allowing for more accurate and controlled shooting. The MPX Copperhead’s cold hammer-forged barrel provides a highly accurate and durable shooting platform, and the firearm’s Picatinny rail allows users to easily mount optics and other accessories.
Maintenance and Accessories
The Sig MPX Copperhead is designed to be easily maintained and accessorized, with a number of features that make it highly user-friendly. The firearm’s upper receiver is designed to be easily removed, allowing users to quickly access the firearm’s operating system for maintenance and repair. The MPX Copperhead also features a Picatinny rail, allowing users to easily mount optics and other accessories. The firearm’s collapsible stock can be easily adjusted, allowing users to customize the firearm’s length to suit their individual needs and preferences.
What is the overall length of the Sig MPX Copperhead?
+The overall length of the Sig MPX Copperhead is 14.5 inches.
What is the magazine capacity of the Sig MPX Copperhead?
+The magazine capacity of the Sig MPX Copperhead is 20 rounds.
What type of barrel does the Sig MPX Copperhead feature?
+The Sig MPX Copperhead features a cold hammer-forged barrel.
In conclusion, the Sig MPX Copperhead is a highly versatile and reliable submachine gun, designed for a wide range of applications, from law enforcement and military operations to competitive shooting sports. With its compact design, lightweight construction, and exceptional performance, the MPX Copperhead is an ideal choice for users who require a reliable and accurate firearm in a variety of environments. Whether you’re a seasoned professional or an avid shooting enthusiast, the Sig MPX Copperhead is sure to meet your needs and exceed your expectations.